Electric regulation.



J. L. CREVELING.

ELECTRIC REGULATION.

APPLICATION FILED JUNE 21. 1911.

1,178,576. P11611161 Apr. 11, 1916.

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JOHN L. CREVELING, OF NEW YORK, N. Y.,

ASSIGNOR '10 SAFETY CAR HEATING AND LIGHTING COMPANY, A CORPORATION OFNEW JERSEY.

ELECTRIC REGULATION.

Application filed June 21, 1911.

automatically regulate an electric circuit in a predetermined manner as,for example, to hold the voltage thereon constant.

The drawing is a diagrammatic representation of one type of systemembodying the essentials of my invention.

In the drawing, 1 represents a dynamo or generator which may be suitablycontrolled in any desired manner to charge the storage battery 2 andfurnish current to the lamps or other translating devices indicated at3.

4 is the positive lead of the generator in communication with thepositive side of the storage battery 2 and the positive side of thelamps or other translating devices 3 which may be thrown in and out ofcircuit if desired as by the switch 5. The negative terminals of thelamps or translating devices 3' are connected with the main 6, and leadto the binding post 7, connected with the contact plate 8, carried bythe insulating back member or base 9 and electrically connected with oneend of the carbon pile resistance 10, the opposite end of which is inelectrical COIIlIIlIlIllCltlOIl with the contact member 11, carried bythe adjustable screw 12 and insulated therefrom as by bushing 13. Thecontact member 11 is connected with a similar contact member 14, carriedby the screw 15 and insulated therefrom as by bushing 16. The member 14is in contact with one end of the carbon pile resistance 36, theopposite end of which is electrically connected with the contact member17 in electrical communication, by binding post 17 with the lead 18which is carried to the negative side of the battery 2 and the negativebrush of the generator. The screws 12 and 15 are carried by the arms 19attached to the movable armature 20, carried upon the rod 21, supportedby the magnot frame 22., secured to the base 9 as by Specification ofLetters Patent.

Patented Apr. 11, 1916.

Serial No. 634,488.

screw 23. The spring 24 normally tends to move the armature 20 away fromthe frame 22 and decrease the pressure upon the carbon piles l0 and 36,while the limit of travel that the spring 24 may give the armature 20may be determined by the nuts 25. 26 is a coil having one of its endsconnected with the wire 6 as by wire 27 and its oppo site end connectedwith the lead 4 near the switch 5, as by wires 28,and 29, through asuitable resistance 30.

31 is a coil wound to oppose the coil 26 and having one of its endsconnected with the wire 27 as by wire 32, and the opposite end connectedas by wire 33 with the proper terminal of a suitable source ofcounterelectromotive force, as indicated by a small storage battery at34, the opposite terminal of which is connected as by wire 35 with thewire 29.

The operation of my invention is substantially as follows: If thegenerator be running and supplying current to the battery 2 and lamps ortranslating devices 3, current will flow from the generator 1, throughlead 4, storage battery 2 and lead 18 to the generator; also throughswitch 5, translating devices 3, main 6, carbon pile 10, carbon pile 36and lead 18 to the generator. Current will also flow through wire 29,resistance 30, wire 28, coil 26, wire 27 to the main 6, and this,current, by energizing the coil 26, will cause the magnet 22 to attractthe armature 20 against the action of spring 24 and compress the carbonpiles 10 and 36 and thus reduce the resistance thereof and tend toincrease the voltage upon the translation circuit. Thecounter-electro-motive force indicated as the small battery at 34, is soarranged that current tending to flow from the wire 29 and through thewire 35 will be opposed by the counter-electro-motive force of saidbattery, and I so adjust the dimen sions of this counter-electro-motiveforce that when a desired predetermined voltage is reached across themains 4 and 6 any increase above said voltage will overcome thecounter-electro-motive force of the battery 34 and then current willflow from the wire- 29 through wire 35, battery 34, wire 33, coil 31,wire 32 and wire 27 to the main 6, which current will set up amagneto-motive force in the coil 31 opposed to that in the coil 26 andthus weaken the action or the latter and lessen the pull of the magnetupon the armature 20 and lessen the pressure of the screws 12 and 15upon the carbon piles 10 and 86 and increase the resistance in thetranslation circuit in such manner as to tend to lower the voltagethereupon. If the electro-motive force of the battery be maintainedconstant, and it the circuit containing the same be of low resistance,it will be obvious that the voltage upon the translation circuit may beheld constant within a very narrow margin, because it he voltage acrossthe translation circuit be slightly below the desired voltage determinedby the counter-elcctromotive force of the battery 3-l, saidcounter-electromotive force will cause a current to flow through coil 31which will assist coil 26 in reducing the resistance in series with thetranslation circuit and on a very slight increase above thecounter-electro-1notive force of the battery S l a considerable currentwill flow in reverse direction and tend to weaken the eiiect of coil 26and thus increase the resistance in the translation circuit and reducethe voltage thereupon, thus any departure from the desired voltage willbe rectified within narrow limits.

I do not wish in any way to limit myself to the exact details ofConstruction nor to the exact operation outlined in this specificationto illustrate an embodiment of my in ention, for it will be obvious thatwide departure in the way of details may be made without departing fromthe spirit and scope of my invention, which is as set forth in thefollowing claims.

I claim 1. The combination of a generator; a circuit; a regulator in thecircuit; a source of current connected with the generator; meansconnected to and adapted to be actuated by the generator for influencingthe regulator; and means connected to and adapted to be actuated by thesource of current for influencing the regulator, said two means beingconnected to oppose each other upon a predetermined rise in voltageacross said circuit.

2. The combination of a generator; a circuit; a regulator in thecircuit; a source of current connected in counter-relation with thegenerator; means controlled by the gens orator for influencing theregulator; and means connected to and adapted to be actue ated by thesource of current for influencing said regulator, said two means beingconnected to oppose each other upon a predetermined rise in voltageacross said circuit.

8. The combination of a. generator; a circuit; a regulator insaidcircuit; a coil connected with the generator for influencing theregulator; a second coil ;=and a second source of electro-motive forcefor influencing said regulator, and a circuit comprising said secondsource of electromotive force and said second coil connected in parallelwith the first coil.

s. The combination of a generator; at circuit; a regulator in saidcircuit; a coil connected with the gei'icrator for influencing theregulator; a second coil; and a second source of electroinotive forcefor also influencing the regulator, a circuit comprising said secondcoil and said second source of electromotive force connected in parallelwith the first coil; and a resistance device connected in series withthe parallel circuit comprising the first coil and the second coil andsecond source of electromotive force.

The combination of a generator; :1. circuit; and a regulator for thecircuit embody ing a variable resistance; means for varying saidresistance; a plurality of coils arranged to act upon said resistancevarying means, one adapted to be actuatedby the generator; a secondsource of electrical energy connected with said coils and adapted toactuate the other coil: and a resistance connected with said coils.

6. An electric system comprising a supply circuit; a vork circuit; aregulator between the supply and work circuits embody ing a variableresistance; means for varying said resistance; plur l-ity of coils toact coniointly upon said resistance varying means; a source ofelectrical energy connected with said coils; a circuit connecting saidcoils and said source across the work circuit, .and a resistance inseries in said circuit.

7. The combination with a main circuit the voltage in which is to bemaintained substantially constant, of a regulating vshunt circuitincluding a plurality of coils in parallel, one of said coils connectedso as to have its effect reversible, and a resistance device in seriesin the main circuit, and means influenced by the shunt circuit "forvarying the effects of said resistance.

8. The combination 01 a generator; at .circuit; a regulator in saidcircuit; a source of current connected with the generator; meansconnected to and adapted to be actuated by the generator for influencingthe regulator; and means connected to and adapted to be actuated by saidsource of current for influencing the regulator, said twomeans beingconnected to oppose each other upon a predetermined rise involtageacross the circuit, the said sOulCe of current and the meansadapted to be actuated thereby being connected in parallel with themeans adapted to be actuated by-t-he generator.

9. The combination of a generator; a circuit; a regulator in thecircuit; a source of current connected in counter-.relation with thegene ator; means connected to and adapted to becontrolled by thegenerator -for influencing the regulator; and means conated therebybeing connected in parallel nected to and adapted to be actuated by thewith the means adapted to be actuated by source of current forinfluencing said reguthe generator.

lator, said two means being connected to op- JOHN L. CREVELING. poseeach other upon a predetermined rise Witnesses:

in voltage across said circuit, the source of CHAS. MoC. CHAPMAN,

current and the means adapted to be actu- ANNA MARIE WALL.

copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents,

, Washington, n. c.

